Coupling for enameled pipes.



PATENTED MAR. 3,1968. R. F. NAILLBR.

COUPLING FOR ENAMELED PIPES.

APPLIOATION FILED JULY 10.1907.

' 2 SHEETS-SHEET 1 .No. 880,813. PATENTED MAR. 3, 1908.

i R. F. NAILLER.

COUPLING FOR ENAMELED PIPES.

APPLICATION FILED JULY 10.1907- 2 SHEETS-SHEET 2.

auvaufoz To all whom it may concern:

specification.

UNITED' rATENT oFF-Icn RAYMOND F. NAILLER, or CLEVELAND, OHIO.

COUPLING FORENAMELED rims.

Be it known that I, RAYMOND F. NAILLER,

citizen of the United States, I residing at Cleveland, in the county of Cuyahoga and has been that each of the various parts used to form the coupling must be of the same thickness throughout, and covered with enamel so as to makeit acid and rust roof.

It is not meant that the ,pipe and al the be enameled of a similar thickness, for the heated much more parts of the coupling must be of the same thickness, but that each iece must be of the same thickness throug out itself. It is necessary-to have allthe metal which is to reasonthat a metal part of varying thickness, if coated with enamelvand put in the furnace to be burned would be im erfect, because the thin portion would ecome uickly than the thick portion, and as a resu t if the metal were left in the furnace the enamel on the thin portion would be burned, consequently spoiling the work, and as the 'thlcker portion would-not be heated enough if the Work were taken out of the furnace when the thin portion were at the proper temperature, the result would also be an imperfect piece of 7 work. This and other reasons prevent the use of pipe or coupling parts having various thicknesses, and the resent invention therefore embodies a cou ing so constructed that no piece thereof is'o varying thickness.

A further feature of the invention is that A further object of the invention is to rovide a coupling which can be readily app ied to the ends of the meeting pipes.

Specification of Letters Patent.

Application filed July 10- 1907- SBI'il-l N0- 382|992- dinal section.

.be spit in order to be a plied.

Patented March 3, 1908 The invention is illustrated-in the accompanying drawings, in which I Figure 1 is an end view, partly in section, of'the coupling. .Fig. 2 is a central longitu- Figs. 3 and 4 are similar views of modifications. i

' Referring specificallyto the drawings, A

indicate the sections of pipe, which are expanded or belled at their ends as indicated at c.

B is a ring of metal which fits within the adjacent ends of the pipe sections, but said pipe sections do not meet, because vibration would then tend to chip the enamel off and ex ose the metal to the action of' the acids or iquidsbeing conveyed. A rubber sleeve or packing C fits between the ring B and the expanded ends of the pipe sections.

The ends of the pipe sections are tightened 'up'on the inner rln or rather the sleeve thereon, by means 0 exterior flanged clamping rings E. Each of these rings is made in two semi-circular part-s connected together I by bolts F,-fo r the purpose of allowing the rings to be 'readily applied to or removed from the pipes.

Inasmuch as both ends of each ipe section are belled, the rin s must he two rings are drawn together y bolts G, connecting the flanges of the collar or ring sections. i

, D are segmental copper plates placed between the bells of the pipes and the clamping ring, so as not to injure the enamel.

All of the parts which compose the coupling, and the pi es, are coated with enamel on all sides, as in icated at H, which makes the pipe and coupling acid proof and also proof against electrolysis, the enamel being a nonconductor of electricity.

As may be seen, each of the arts is of the same thickness throughout, an consequently will receive the enamel properly. The bells and clamping rings are concentric, whereby a flexible joint is formed which may be set at various angles to accommodate the pipe line to local conditions.

In Figs. 3 and 4 a modified form is shown, having the same characteristics as'the coupling above described, with the exception that instead of the split rings being connected by bolts, one section of the ring has hooks I at the end and the other section has projections J at the end, which engage within the hooks,

- Y pipesand parts being coate with enamel and and so tighten w'hen'the ring is drawn up on the bell of the pipe.

I claim:

1. A coupling for enameled pipes, comprising a plurality of parts connecting the pipe ends, each of said. parts 'being coated with enamel and of uniform thickness throughout.

2. The combination with pipes ofa detachable coupling comprising separable parts around the ends of the pi es, each of said ofuniform thicknessthroughout I 3. In a pipe coupling, the combinationof pipes having expanded ends, a connecting a ring fittingwithin said ends, and clam ing rings fitting upon said ends and connecte together, said rings being formed in sections joined together eachof the pipes, ends and sem s connecting ring being coated inside and Y 1 out with enamel and of uniform thickness throu hout.

4. coupling for enameled pipes, com

a packing ends, en-

tween said clamping rings and the pipes.

In testimony whereofI ture, in presence of two witnesses.

RAYMOND NAILLER.

Witnesses I i "JOHN A. BOMMHARDT,

' EDITH D. CoMER.

ring

ends and connected together, and softmetal plates be- 

